Zone Alarm Firewall

ZoneAlarm Free Firewall blocks hackers from infiltrating your home PC by hiding your computer from unsolicited network traffic. By detecting and preventing ...

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Sysinternal (Microsoft) Security monitoring tools and more

Many of the Sysinternal's programs can help diagnose security holes. Others extend some of Windows' built-in features. Microsoft has recently acquired Sysinternal's, and all of the Sysinternal programs are free.

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